Warning for K&N filter users in drought regions!!!
Once again, I had an unexpected and unexplained SES light come on. I don't have a scan tool and I didn't want to go to Auto Zone to have it checked, so I did a little old-timey check off list to see if I could find the cause.
Found it!
In the Charlotte area, we are still experiencing very dry conditions. We are something like 6" of rain behind this year, in addition to the 12" or so we were behind last year. Every time I cut my grass (I don't use a watering system for >= two acres), I've noticed a need to clean the air filter much more frequently due to clogging from fine particulate matter (dusty air). Well, I normally check my K&N filter (SLP lid w/ "free" air mod to the box) every oil change and usually end up cleaning and re-oiling it about every third oil change. Not anymore. These dry conditions have apparently caused much more dust and dirt to be screened out in the filter, and while the MAF side of the filter looked "okay", the intake side was awful. It was FULL of thick gummy matter very similar to engine sludge around valve covers that aren't cleaned regularly on a high mileage engine. It was embarrassing, but I know that such build up has not been the case in the past on this vehicle or my Dodge truck that uses a FIPK K&N. The answer to this problem has to be coming from the dry conditions we have been suffering. I know that once cleaned, the car ran good and there was no SES light.
I recommend that anyone running a properly oiled K&N filter in drought-stricken areas pay close attention to the filter. It is becoming dirty much quicker than it normally does.
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Quote:
Originally Posted by
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